Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual líder do partido Unionista Democrático tem mais de 8 assentos?
 ###Tabelas: CREATE TABLE platforms (platforms_id AUTO_INCREMENT PRIMARY KEY, Stop no. VARCHAR, Platform VARCHAR, Line VARCHAR, Stopping pattern VARCHAR, Destination VARCHAR) CREATE TABLE leaders_in_the_northern_ireland_assembely (leaders_in_the_northern_ireland_assembely_id AUTO_INCREMENT PRIMARY KEY, Leader VARCHAR, Party VARCHAR, Leader's Seat VARCHAR, Number of Seats INT, Leader since VARCHAR) CREATE TABLE wins_17–13 (wins_17–13_id AUTO_INCREMENT PRIMARY KEY, Outcome VARCHAR, Date VARCHAR, Championship VARCHAR, Surface VARCHAR, Opponent in the final VARCHAR, Score in the final VARCHAR) CREATE TABLE 2013_teams (2013_teams_id AUTO_INCREMENT PRIMARY KEY, Team VARCHAR, Home city VARCHAR, Home ground VARCHAR, In Toppserien since INT, First appearance INT, Seasons INT) CREATE TABLE runner-up_16 (runner-up_16_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, Tournament VARCHAR, Surface VARCHAR, Opponent in the final VARCHAR, Score VARCHAR)  
SELECT Leader FROM leaders_in_the_northern_ireland_assembely WHERE Number of Seats > 8 AND Party = democratic unionist party